public class Test_MyQueue {
    public static void main(String[] args) {
    MyQueue myQueue = new MyQueue();
    myQueue.offer(1);
    myQueue.offer(2);
    myQueue.offer(3);
    myQueue.offer(4);
    // 4   3   2   1

    System.out.println(myQueue.poll());
    System.out.println(myQueue.poll());
    System.out.println(myQueue.poll());
    System.out.println(myQueue.poll());
    System.out.println(myQueue.poll());
    System.out.println(myQueue.poll());
    }
}

